Coating machine



Sept. 28 1926.

1,601,599 *H. D. PENNINGTON COATING MACHINE Filed Jan. 20. 1922 4Sheets-Sheet 1 Sept. 28 1926.

1,601,599 H. D. PENNINGTON COATING MACHINE Filed Jan. 20, 1922 4Sheets-Sheet 2 INVENTOR Sept. 28 1926.

H. D. PENNINGTON COATING MACHINE 4 Sheets-Sheet 5 Filed Jan. 20, 1922 m9w N E? Q. 4

Sept. 28 1926. 1,601,599

H. D. PENNINGTON COATING MACHINE Filed Jan. 20, 1922 4 Sheets-Sheet 4aff/74k 4 4 m /M fi W - these sets of rolls may Patented Sept. 28, 1926.

,UNITED STATES. PATENTOFFVI'CE- HARLEY D. IPENNINGTON, F PITTSBURGH,PENNSYLVANIA, ASSIG-NOIR TO UNITED ENGINEERING & FOUNDRY coMraNY, orPITTSBURGH, PENNsYLvANIA, A. con- IPOBATION OF PENNSYLVANIA,

' COATING MACHINE.

Application filed January 20, 1922. Serial No. 530,565.

My invention relates to coatingmac hines which may be used ingalvanizing processes and other coating processes.

Animportant object f the present invention is to provide an improvedcoating machine in which he frame for supporting the rolls, guides andother parts is arranged to be entirely above the level of the coatingfluid in the potor vat, and in which the housings for the intermediatevor bottom rolls are made separate from and are detachably connected tothe frame, whereby.

when the roll housings are destroyed by the corrosive action of thecoating material, they can be removed and new housings substitutedwithout the necessity of providing a new frame.

Another object of the invention is to provide a novel construction ofhousings for the intermediate or bottom rolls adapted to facilitateremoval of these rolls fromthe frame. A further object of the inventionis to provide improved means for driving the intermediate or bottomrolls adapted to facilitate removal of the rolls from the housings andenabling these ,rolls to be driven astheir respective diametersdecreasedue to wear and frequent dressings, without the. necessity forchanging the gears on the rolls. e

Still another object ofthe invention is to provide a detachable drivingconnection-between the driving means and the several sets of rolls inthe frame, whereby any of be readily disconnected from the drivingmeans, or all of the rolls may be disconnected therefrom to per mitraising of the frame for removal of the rolls and other parts carriedthereby 'from the vat for cleaning. My invention will be betterunderstood by reference to the following description taken in connectionwith the accompanying drawings showing one embodiment of my invention,and in which:

Figure 1 is a plan view of a machine embodying my invention.

Figure 2 is a section on line IIII of Figure 1; I 1" Figure 3 is'asection on line III-III of Figurel;

Figure 4 is a* perspective-view of the sup. porting frame;

1 .cbnt'aining'the coatin bath. The supportgrooved along .Meshing with21 and with the worm wheel 20 1s a similar Figure 5 is a partial sectionof a modification of my invention; and

ling. v I

Referring to the drawings, the device is mounted ona suitable foundationstructure in which is placed the pot or vat 2 for ing frame is mountedon the end wal s of the vat and comprises side'members 3 and 4 (seeFigure 4.)- joined'together by rods or other members 5. It will be seenthat the, supporting frame is so constructed and arranged of the bath,and therefore no part of the frame is subjected to the corrosive actionof the bath. Housings 6 and 7 for the center roll's8 and 9 are carriedby the side members?) and 4, respectively. The housings 6 and 7 aredetachably connected to the members 3 and 4 by the portions 10 and 11and are fastened'together by the spacing rod 12.

The housing member 6 is considerably' offset at 13.for a reason whichwill appear later. The housing member 7 is also offset at 14 but is notas much as the member 6.

The intermediate or bottom rolls 8 and 9 are provided with bearingblocks 15 and 16. These bearing blocks 15 and 16 are the slides 17 and18 of the housings 6 and 7 and are thereby guided and held in place.

The intermediate or bottom rolls 8 and 9 are provided with worm Wheels19 and 20. the worm wheel 19 is a worm worm 22. These worms are carriedon shafts which project upwardly and are carried at the top in asuitable frame structure 23, which is supported by the side frame member4:. At their upper ends these shafts are provided with worm wheels 24which mesh with a worm 25 on the shaft 26, which is driven from thepower motor 27 through suitable gears 28, 29 and30.

It sometimes becomes necessary to adjust the worms 21 and gears 19 and20. present instance by This is effected in the inserting wedge shaped'members 67 behind the bearing blocks of the worms and providing a handwheel 68 for moving the wedge members 67 up or down, depending uponwhether the worm Figures 6 and 7 show details \of a coup as to beentirely above-the leveltheir edges and slide upon 22 withrespect to theis to be moved away from or closer to the worm gear. Any other suitablemeans may be provided for this adjustment.

The rolls 8 and 9 are held in proper contact by counterweighted arms 69,pivoted to the frame at 70 and acting upon the upper ends of verticallysliding rods which latter .bear at their lower ends upon the bearing inthe grooves, as shown in these figures.

The guides 31 and 32 perform the usual function of such guides and aresupported at their ends from the frame structure by any suitable means.

Mounted on the foundation structure is a pair of wringer rolls 34 of anydesired construction. The rolls are held together by springs 34. Thecompression on these springs may be changed by the adjusting screws 34".A pair of intake rolls 33 is mounted upon the end of the frame andguides 35 and 36 guide the sheets or other material from the rolls 34 tothe rolls 33.

Mounted on the other end of the frame are the exit rolls. In thedrawings two sets of exit rolls 37 and 38 are shown, but in manyinstances it is not necessary to prov vide two sets of such rolls and inwhich event the said rolls 38 may be dispensed with. f

A counterweighted arm 39 pivoted at 40, bears against one of the exitrolls 37 and holds the same against the other roll of that pair with aforce dependent upon the position of the counterweight 41. A guidemember 42 directs the material out of the pot over a roller 43.

The motor 27 is arranged to operate all of the rolls of the machine. Itoperates the center rolls 8 and 9 through the medium of gears 28,29 and30 and the worms connected with the shaft 26. It operates the feed rollsthrough the gears 44 and 45, which latter gears connect with the shaft46, which in turn is provided with a gear (not shown) which operates thefeed rolls 33. The shaft 46 is also rovided with a sprocket 47 whichconnects t rough a chain 48 with a sprocket 49 on the feed rolls 34.

The gears 44 operate the shaft 50, which has at one end thereof a bevelgear 51 meshing with a'gear 52 on the shaft 53. On one end of the shaft53 is sprocket 54 which is connected with a sprocket 55 by a chain 56.The sprocket 55 is mounted on the shaft 57 which shaft carries theroller 43.

The other end of the shaft 53 is provided with a plurality of gears 58of different diameters. A shaft 59 is placed parallel to the shaft 53and is adapted to carry a gear 60 which will be of suitable size to meshwith any one of the gears 58, depending upon the desiredrelative s eedsof rotation between the shafts 53 an 59. The shaft 59 is connected to ashaft 59 which has on its other end a gear 61 which meshes with the gear62 on the end of one of the exit rolls 37. The gear 61 also meshes withthe gear 63 on the end of one of the exit rolls 38. The gear 61 alsomeshes with an idler gear 64, which in turn meshes with a gear 65 on theend of one of the exit rolls 37 and with a gear 66 on the end of one ofthe exit rolls 38. The shafts 46, 26 and 59 are provided with couplings71. These couplings are shown in detail in Figures 6 and 7. The

coupling comprises a member 72 which has been bored out to receive thereduced end portion 73 of a shaft 74. vThe member 72' is provided with akey-way'to receive a key 75 which also enters a key-way in the portion73 of the shaft. A portion 76 of the member 72 extends'beyond the end ofthe portion 73 and a slot 77 is out through it as shown in F igures'6and'7. A rectangular drive shaft 7 8'such asthe shafts 46, 26 and 59 isplaced in the slot 77. A sleeve 79 is slipped over the portion 76 toretain the shaft 78 in the slot 77. A keeper 80 is placed in thecoupling to hold the parts in place as clearly shown in Figures 6 and 7.

Figure 5 shows a modification of my machine. This modification providesmeans whereby smooth intermediate or bottom rolls 8' and 9* may be used.In that event the guides 31 and 32 terminate adjacent the rolls 8 and 9and are supported by members which are fastened to the supporting framestructure. In this structure the bearing blocks 15 and 16 are notprovided with grooves, but have shoulders which bear upon the inside ofthe housings 6 and 7 as shown. In all other respects thearrangementshown in Figure 5 is the same as heretofore described, thecorresponding parts being marked with the exponent a.

In operation the sheets or other material to be treated are introducedto the wringer rolls 34 from which they pass to guides 35 and 36 and tothe intake rolls 33 and from these rolls into the bath through theguides 31 and 32. As they pass through these guides they pass betweenthe intermediate or will stick in the guides, and it is desirable to beable to lift the upper roll 8 out of the machine quickly, so that thestuck sheet may be removed. The construction of the housings for theintermediate or bottom rolls sothat their lower portions are spacedapart a less distance than the distance between the side members 3 and 4of the supporting frame facilitates removal of the upper roll 8, as thiscan be done by merely swinging over the levers 69, and without firstremoving any other parts of the machine. lVith this construction, thetop roll 8 may be removed and replaced again with very little delay inthe operation of the machine, which is a decided advantage.

In the structure shown in Figure 5 the whole frame may be lifted fromthe pot and a bar used toraise the bearing blocks 15 until they clearthe roll 8, whereupon the roll 8 may be taken out through the windowsbetween the legs 17 and 18 of the housing. y

The couplings 71 provide means whereby the driving motor 27 can bequickly disconnected from any set of the rolls in the supporting framewhen it is desired to stop or to remove such rolls, or whereby the motorcan be readily and quickly disconnected from all of said rolls when itis desired to raise the supporting frame to remove the rolls and otherparts from the vat for cleaning. The shaft 57 is not provided withcouplings, as that shaft is mounted in open bearings so that the roll 43may be removed from the machine by lifting it out of the bearings.

It is desirable that the surface speed of the exit rolls should be keptat approximately a predetermined amount. These exit rolls after beingused for awhile become pitted or otherwise roughened or misshapened ontheir surfaces. It is necessary toturn down these rolls at intervals tokeep their surfaces in good condition. I'Vhen this is done the diameterof the rolls is decreased; consequently it is necessary to rotate therolls at correspondingly greater revolutions per minute in order tomaintain surface speed at the desired amount. This is accomplished bythe speed changing gears 58 and 60. Then it is necessary to turn downthe exit rolls an approximate amount will be turned off. This amountwill be figured with relation tothe speed change gears soas'to give thedesired surface speed to the rolls. This results in a longer life of therolls.

An important advantage of the present invention arises from theconstruction and arrangement of the supporting frame so as to beentirely above the level of the bath, and from the provision of housingsfor the intermediate or bottom rolls which are formed separate from anddetachably connected to the frame.

Another advantage of the invention arises from the construction of thehousings for the intermediate or bottom rolls with their lower portionsspaced a less distance apart than the side members of the supportingframe, whereby removal of the intermediate rolls is facilitated.

Another advantage of the invention arises from the particulararrangement of driving means for the intermediate rolls.

further advantage of the invention arises from the provision ofdetachable driving connections between the driving motor and the drivenrolls.

I claim:

1. In a coating machine, a receptacle for the coating bath, a supportingframe constructed and arranged to be wholly above the level of the bath,a pair of oppositely arranged roll housings detachably secured to saidframe and depending into said re ceptacle, and a pair of rolls supportedin said housings, substantially as described.

2. In a coating machine, a receptacle for the coating bath, a supportingframe constructed and arranged to be wholly above the level of the bath,a pair of oppositely arranged U-shaped roll housings detachably securedto said frame and depending into said receptacle, and a pair of rollssupported in said housings, substantially as described.

3. In a coating machine, a receptacle for the coating bath, a supportingframe constructed and arranged to be wholly above the level of the bath,a pair of oppositely arranged roll housings detachably secured to saidframe and depending into said receptacle, and a pair of rolls supportedin said housings and arranged one above the other, substantially asdescribed.

4;. In a coating machine, a receptacle for the coating bath, asupporting frame constructed and arranged to be wholly above the levelof the bath, a pair of oppositely arranged roll housings detachablysecured to said frame and depending into said recep-- tacle, a pair ofseparate bearing blocks slidably supported in each of said housings oneabovethe other, and a pair of roll journaled at their ends in saidbearing blocks, substantially as described.

5. In a coating machine, a receptacle for the coating bath, a supportingframe comprising two parallel rectilinear side members extendinglongitudinally of and resting at their ends upon the upper edges of theend walls of said receptacle, a pair of op. positely arranged rollhousings detachably secured to said side members and depending into saidreceptacle, and a pair of rolls sup ported in said housings,substantially as described.

6. In a coating machine, a receptacle for the coating bath, a supportingframe comprising a pair of parallel side members extendinglongitudinally of said receptacle and arranged to be Wholly above thelevel of the bath, a pair of oppositely arranged U-shaped roll housingsdetachably secured to said side members, each. of said housings havingits lower portion offset toward the other housing, and a pair of rollsof less length than the distance between said side members supported insaid housings, substantially as described.

7. In a coating machine, a receptacle for the coating bath, a supportingframe comprising a pair of side members extending longitudinally of saidreceptacle and arranged to be wholly above the level of the bath, a pairof oppositely arranged roll housings detachably secured to said sidemembers intermediate the ends of the latter and de-- pending into saidreceptacle, a pair of rolls supported in said housings, and a pair ofexit rolls supported by said side members adjacent one end thereof,substantially as described.

8. In a coating machine. a receptacle for the coating bath, a supportingframe comprising a pair of side members extending longitudinally of saidreceptacle and arranged to be wholly above the level of the bath, a pairof oppositely arranged roll housings detachably secured to said sidemembers intermediate the ends of the latter and depending into saidreceptacle, a pair of rolls supported in said housings, a pair of exitrolls supported by said side members adj acent one end thereof, and apair of intake rolls supported by said side members adj acentthe'opposite end thereof, substantially as described.

9. In a coating machine, a frame, a pair of oppositely arranged rollhousings supported by and depending from said frame, a pair of bearingblocks slidably arranged one above the other in each of said housings, apair of rolls journaled at their ends in said bearing blocks, and meansfor driving each of said rolls independently of the other comprising agear on one end of each of said rolls, a pair of shafts each having adriving connection at one end with the corresponding gear on one of saidrolls, a gear on the opposite end of each of said shafts, and means fordriving said last mentioned gears, substantially as described.

10. In a coating machine, a supporting frame, a pair of oppositelyarranged roll housings supported by and depending from said frame, apair of bearing blocks slidably arranged one above the other in each ofsaid housings, a pair of rolls journaled at their ends in said bearingblocks, a gear on one end of one of said rolls and a gear on thecorresponding end of the other of said rolls, apair of vertical shaftsone having a worm on its lower end meshing with the gear on one of saidrolls and the other having a worm on its lower end meshing with the'gear. on the other of said rolls, adjustable means for maintaining saidworms in engagement with said gears, and means for driving said shafts,substantially as de scribed.

11. In a coating machine, a frame comprising parallel side .members, apair of oppositely arranged roll housings supported by and dependingfrom said side members, said roll housings "having their lower portionsspaced a less distance apart than the distance between said sidemembers, and a pair of rolls supported in said housings, substantiallyas described.

12. In a coating machine, a frame comprising parallel side members, aU-shaped housing depending from: each of said side members, saidhousings being oppositely arranged and each having its lower portionoffset toward the other housing, a pair of hearing blocks slidablyarranged one above the other in said lower portion of each housing,

a pair of rolls ournaled at their ends insaid bearing blocks, a weightedlever arranged above each of said upper bearing blocks and pivoted atone end to the frame, and pressure transmitting means intermediate eachof said levers and its corresponding upper bearing block.

13. In a coating machine, a supporting frame, a roll supported by saidframe, stationary means for driving said roll spaced from said frame,and a driving connection between said driving means and. said rollcomprising an elongated shaft extending between said driving means androll and having each end thereof positioned in a slot in a couplingmember, and a removable sleeve engaging each of said coupling membersfor maintaining the end of the shaft in the slot thereof, substantiallyas described.

14. The combination with a tinning machine having a driving means andfinishing rolls driven thereby, of an adjustable Variable speed gearinginterposed between the driving means and the rolls.

In testimony whereof I have hereunto set my hand.

HARLEY D. PENNINGTON.

